JPS51150369A - Electronic watch - Google Patents

Electronic watch

Info

Publication number
JPS51150369A
JPS51150369A JP50073945A JP7394575A JPS51150369A JP S51150369 A JPS51150369 A JP S51150369A JP 50073945 A JP50073945 A JP 50073945A JP 7394575 A JP7394575 A JP 7394575A JP S51150369 A JPS51150369 A JP S51150369A
Authority
JP
Japan
Prior art keywords
electronic watch
secure
watch
feedback circuit
electronic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP50073945A
Other languages
Japanese (ja)
Other versions
JPS6015905B2 (en
Inventor
Yoichi Imamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP50073945A priority Critical patent/JPS6015905B2/en
Priority to US05/697,593 priority patent/US4114363A/en
Publication of JPS51150369A publication Critical patent/JPS51150369A/en
Publication of JPS6015905B2 publication Critical patent/JPS6015905B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G3/00—Producing timing pulses
    • G04G3/02—Circuits for deriving low frequency timing pulses from pulses of higher frequency
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G3/00—Producing timing pulses
    • G04G3/02—Circuits for deriving low frequency timing pulses from pulses of higher frequency
    • G04G3/022—Circuits for deriving low frequency timing pulses from pulses of higher frequency the desired number of pulses per unit of time being obtained by adding to or substracting from a pulse train one or more pulses

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)

Abstract

PURPOSE: To secure an electronic watch of lower power and higher accuracy by installing a feedback circuit in order to secure a wider environmental range in which the watch can maintain the maximum accuracy. The feedback circuit performs adjustment for the counting frequency through the electronic treatment of time error by means of the time correcting signal.
COPYRIGHT: (C)1976,JPO&Japio
JP50073945A 1975-06-18 1975-06-18 electronic clock Expired JPS6015905B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP50073945A JPS6015905B2 (en) 1975-06-18 1975-06-18 electronic clock
US05/697,593 US4114363A (en) 1975-06-18 1976-06-18 Electronic timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50073945A JPS6015905B2 (en) 1975-06-18 1975-06-18 electronic clock

Publications (2)

Publication Number Publication Date
JPS51150369A true JPS51150369A (en) 1976-12-23
JPS6015905B2 JPS6015905B2 (en) 1985-04-22

Family

ID=13532738

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50073945A Expired JPS6015905B2 (en) 1975-06-18 1975-06-18 electronic clock

Country Status (2)

Country Link
US (1) US4114363A (en)
JP (1) JPS6015905B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54170430U (en) * 1978-05-23 1979-12-01
JPS621279U (en) * 1985-06-17 1987-01-07

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6059553B2 (en) * 1976-12-01 1985-12-25 カシオ計算機株式会社 timing device
JPS54134669A (en) * 1978-04-11 1979-10-19 Citizen Watch Co Ltd Electronic watch
DE3022949C2 (en) * 1980-06-19 1983-11-17 Werner 6802 Ladenburg Schulz Process for the automatic correction of the rate deviation of a clock
US4407589A (en) * 1981-02-13 1983-10-04 Davidson John R Error correction method and apparatus for electronic timepieces
JP3180494B2 (en) * 1992-04-17 2001-06-25 セイコーエプソン株式会社 Logic device
GB2297854B (en) * 1995-02-07 1999-04-07 Nokia Mobile Phones Ltd Real time clock
GB2358490B (en) * 1999-12-29 2004-08-11 Nokia Mobile Phones Ltd A clock
KR101635545B1 (en) * 2009-03-03 2016-07-11 삼성전자주식회사 Error compensation method of timer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH554015A (en) * 1971-10-15 1974-09-13
US4015419A (en) * 1972-10-02 1977-04-05 Citizen Watch Co., Ltd. Electronic timepiece
GB1488914A (en) * 1973-12-19 1977-10-19 Citizen Watch Co Ltd Electronic timepiece
CH616297B (en) * 1974-09-16 Centre Electron Horloger GARDE-TEMPS COMPENSE EN FONCTION D'AU MOINS UN PARAMETRE PHYSIQUE D'ENVIRONNEMENT.
US3914931A (en) * 1974-10-01 1975-10-28 Suwa Seikosha Kk Electronic timepiece

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54170430U (en) * 1978-05-23 1979-12-01
JPS5827234Y2 (en) * 1978-05-23 1983-06-13 株式会社コロナ Vaporizer for oil burning appliances
JPS621279U (en) * 1985-06-17 1987-01-07

Also Published As

Publication number Publication date
JPS6015905B2 (en) 1985-04-22
US4114363A (en) 1978-09-19

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